Phys. Rev. Lett. 89, 237401 (2002) [4 pages]Correlated Vibrational Dynamics Revealed by Two-Dimensional Infrared SpectroscopyReceived 14 June 2002; published 15 November 2002 Two-dimensional infrared (2D IR) spectroscopy has been used to monitor the solvent-induced correlated fluctuations in the transition energies of two coupled vibrations. The elongation of diagonal and cross peaks in a 2D IR correlation spectrum reflects the degree of inhomogeneity in the individual transition energies and the correlation between them. Changes in the 2D line shapes as a function of a variable waiting period have been successfully reproduced by a correlated spectral diffusion model. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.237401
DOI:
10.1103/PhysRevLett.89.237401
PACS:
78.30.Jw, 42.50.Md, 63.50.+x, 78.47.+p
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